Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Quantas partidas foram jogadas que resultaram em menos de 59.1 overs e uma taxa de economia de 6.78?
 ###Tabelas: CREATE TABLE composition_of_the_7th_seanad (composition_of_the_7th_seanad_id AUTO_INCREMENT PRIMARY KEY, Administrative Panel INT, Agricultural Panel INT, Cultural and Educational Panel INT, Industrial and Commercial Panel INT, Labour Panel INT, National University of Ireland INT, University of Dublin INT, Nominated by the Taoiseach INT, Total INT) CREATE TABLE most_wickets (most_wickets_id AUTO_INCREMENT PRIMARY KEY, Player VARCHAR, Team VARCHAR, Matches INT, Overs INT, Wickets INT, Economy Rate INT, Average INT, Strike Rate INT, Best Bowling VARCHAR) CREATE TABLE desktop_and_mobile_browser_usage (desktop_and_mobile_browser_usage_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Internet Explorer VARCHAR, Chrome VARCHAR, Firefox VARCHAR, Safari VARCHAR) CREATE TABLE typical_values_of_sfc_for_thrust_engines (typical_values_of_sfc_for_thrust_engines_id AUTO_INCREMENT PRIMARY KEY, Engine type VARCHAR, Scenario VARCHAR, SFC in lb/(lbf·h) INT, SFC in g/(kN·s) INT, Specific impulse (s) INT, Effective exhaust velocity (m/s) INT) CREATE TABLE men_kayak (men_kayak_id AUTO_INCREMENT PRIMARY KEY, Distance VARCHAR, Event VARCHAR, Record VARCHAR, Nationality VARCHAR, Year INT, Location VARCHAR)  
SELECT SUM Matches FROM most_wickets WHERE Overs < 59.1 AND Economy Rate > 6.78